Sort words according to the spelling patterns o a
oa o-e
want watch wander
quantity squash was
wash squat hot
shot rot riot
knot object clots
home road stone
The /ɒ/ sound spelt a after w and qu
Rule: a is the most common spelling for the /ɒ/(‘hot’) sound after w and qu.
Cut this top row off before you give the sort to pupils!